Mail Gateway Node shared this idea 4 years ago
Under Consideration

Add role as mail gateway node only.

That node will only filter incoming/outgoing mails thru spam, antivrus, blacklists, rbls and pass thru all good mails to mail node server.

On mail gateway: spamassassin with pyzor, razor, dcc,, rbl check + clamav or other + mhr scanner + pearl scanner

Main mail node can skip scans from mg node so it's less loaded